Rod support



Nov. 13, 1928.

.F. M. BARTON ROD SUPPORT Filed April 11, 1928 we/zZZI Patented Nov. 13,1928.

7 runners m- EARYDQN, a cinema ltla w 1 non snnPO'BT.

"Application filed rpm 11; 1928 Serial access.

The inyention relates' to. rod supports or chairs and moreparticularlyto those supports which are made by bending strips of wire and areemployed in the formation and 5 construction of concrete structures :tospace and position reinforcing rods prep aratory to pouring the concretein the molds and around the bars.

One object of the present invention is to provide a support of thischaracter which is of an improved construction andis so formed that the"bending operation may be accomplished in a simple. manner and with aminimum number of steps, ,thus facilitating ma n ufactureand reducingthe cost ofthe finished product. p 7

Another object of the invention is to provide a wiresupport orechair forretaining in place concrete reinforcing bars which is staple and rigidand permits the concrete to be poured readily and completelytherearound. Q

Other objects will be manifest fromthe detailed description hereafter.

Figure 4 is a perspective of a U-shaped strip of wire from which thesupport is bent; and

Figure 5 is a view similar to Figure 4, showing the manner inwhichtheend of the wire strip embodying the cross bar is bent 1 .3

rest. 7

Theinvention is exemplified in a wire support or chair for supporting across-bar a in spaced relation with respect to a concrete form or mold(not shown). This .crossrod in turn supports a plurality of metallicreinforcing rods or bars 6 sothat the latter will be properly positionedand retained during the concrete pouring operation, as Well understoodin the art. As shown in Figure 1, two chairs or supports are preferablyused .The invention consists in the several novel' to form the legs ofthe support and the bar to sustain the cross-bar a, said supports ibeingarranged adjacent the ends of the cross-bar and to face one another. Theconcrete is pouredinto the mold and around the supports and reinforcingbars in any suitable manner. As soon as 1t sets, the metallic partswhich are embedded therein operate as reinforcing members. I

The wire chair or support which forms the subject matter of the presentinvention comprises a-pair of front legs lO, a pair vof rear legs "11and a cross-member 12'whichex tendsbetwcen and connects the front legs10 and forms a rest forthecross-bar a; Thefront legs 10 are parallelsothat the lower-ends thereof are spaced apart the same distance as theupper ends. Each of these legs con sists =of-a member 13 which isdoubledback upon itself to forrnla shorter member- 14. The bends or loops 15which connect the members 13 and '14 are adapted to rest upon the moldand operateas' feet. Tsheseiloops lextendat right angles to the plane inwhich 7 themembers 13 he with the result thatzthe members .14 aredisposed parallehwith and directly in front of saidmembers 13 ascontradistinguished from being in transverse alignment or angledoutwardly or inwardly. The upper ends of the short members 14 terminateapproximately half way between the mi dpoints and outer ends of themembers 13 and are connected to the cross member 12 by integral rightangle portions or bends 16. A characteristic of positioning the loops 15in the manner set forth is that the members 14 as well as the connectingbends or portions 16, are directly in front of the leg-members 13. Sincethe legs lO'slant rearwardly, as

shown in Figures 1 and 2, this arrangement operates to effectively lockthe cross-bar and members 14 against rearward movement relatively to themembers 13. In this manner the concrete reinforcing bars a and b areefficiently supported.

The cross-member12 ispreferably made so as to substantially correspondin length to the diameterof the cross-bard. The upper or extendedportions of the members 13 operate as sides for the cross-member 12 andprevent lateral displacement of the bar a. The rear legs 11 are joinedto the upper ends of the members 13 by integral connecting portions 17which are bent so that the legs extend downwardly and rearwardly andalso outwardly, as shown in Figure 3, to give lateral stability to thesupport By having the front legs 10 parallel and comparatively closetogether and the rear legs project outwardly in the manner set forth,the support issub'stan- I claim as new and desire to secure by Lettiallyin the form of a pyramid and is'extremely rlgld.

The chair or support isbent from a single U-shaped strip of wire havingparallel side members (Figure 4). The first step of the manufacturing orforming operation consists in doubling back upon itself the end of theWire strip that embodies the cross member.-

This one bending step'serves to position the cross memb'er12 and formsthe front legs '10.

he distal ends or the side members of the '1 U-shaped Wire strip arethen bent so as to eX- tend outwardly and at an acute angle With respectto the end that is doubled back and to form the rear legs 11; Thissecond step completes the manufacturing operation. Since only a U-shapedstrip of Wire is used and there are only two bending steps, it is manifestthat the cost of manufacture is comparatively small. By making thefirst bend at may be modified Withinithe scope of the appended claims,Without departing from the spirit and scope of the invention.

Havmg thus described the invention, What ters Patent, is:

1." A support fora reinforcing bar, formed" from a single strip of Wireand comprising a pairof substantially parallel legs, each consistingiota member having one end doubled back upon itself to form a second memberdirectly in front thereof, and across member joined to the secondmembers by bent portions disposed directly in front of and lapping thefront faces of the other members, said cross-bar being "operative tospace the legs apart and support the bar. f l

2. A support for a reinforcing bar, formed from a single strip of Wireand comprising a pair ot'substantially parallel front legs, eachconsisting of a member having 1ts lower end doubled back upon itself toforma second member in front thereof, a pair 01 legs oined to the upperends otthe first mentioned meni bers anu extending rearwardly and outwar1- ly, and a comparatively short cross member joined to the upper endsof the second mem bers, said cross bar being operative to space thetront legs close together and support the bar. I i

Signed at Chicago, Illinois, this 3rd day of April, 1928. i

' FRANCIS M. BARTON.

